cant find free steam key

It should be in the spending column, then on the map should be something like a free key!

Shazam MerlinIt should be in the spending column, then on the map should be something like a free key!

I meant when I have the key already but where do I go to use it?

Oh, sorry I didn't understand!
So you go on steam, then in the top left corner, click on games, activate a product on steam, then enter the code!